14-Night Cruise on Oceania SirenaIberia & Italian Treasures Lisbon to Rome - Weather

Departing Lisbon, Portugal on December 21, 2026, the Oceania Cruises ship Oceania Sirena runs this 14-night Iberia & Italian Treasures Lisbon to Rome sailing. It's a classic Mediterranean cruise. Travelers sailing in December can generally expect mild, changeable weather that can turn cool and wet. Ports of call include Lisbon, Portugal, Portimao, Portugal, Cadiz, Spain, with 8 more along the way. Scroll the daily outlook below to pack smart for every port of call.

1. Day 1 — Monday, Dec 21, 2026 — Lisbon, Portugal

   Lisbon, Portugal is a scheduled port of call on day 1 of the 14-night Iberia & Italian Treasures Lisbon to Rome cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 60°F.

2. Day 2 — Tuesday, Dec 22, 2026 — Portimao, Portugal

   Portimao, Portugal is a scheduled port of call on day 2 of the 14-night Iberia & Italian Treasures Lisbon to Rome cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 62°F.

3. Day 3 — Wednesday, Dec 23, 2026 — Cadiz, Spain

   Cadiz, Spain is a scheduled port of call on day 3 of the 14-night Iberia & Italian Treasures Lisbon to Rome cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 62°F.

4. Day 4 — Thursday, Dec 24, 2026 — Malaga, Spain

   Malaga, Spain is a scheduled port of call on day 4 of the 14-night Iberia & Italian Treasures Lisbon to Rome cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 63°F.

5. Day 5 — Saturday, Dec 26, 2026 — Palma De Mallorca, Spain

   Palma De Mallorca, Spain is a scheduled port of call on day 5 of the 14-night Iberia & Italian Treasures Lisbon to Rome cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 60°F.

6. Day 6 — Sunday, Dec 27, 2026 — Palamos, Spain

   Palamos, Spain is a scheduled port of call on day 6 of the 14-night Iberia & Italian Treasures Lisbon to Rome cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 57°F.

7. Day 7 — Monday, Dec 28, 2026 — Toulon, France

   Toulon, France is a scheduled port of call on day 7 of the 14-night Iberia & Italian Treasures Lisbon to Rome cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 60°F.

8. Day 8 — Tuesday, Dec 29, 2026 — La Spezia, Italy

   La Spezia, Italy is a scheduled port of call on day 8 of the 14-night Iberia & Italian Treasures Lisbon to Rome cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 55°F.

9. Day 9 — Wednesday, Dec 30, 2026 — Ajaccio, Corsica

   Ajaccio, Corsica is a scheduled port of call on day 9 of the 14-night Iberia & Italian Treasures Lisbon to Rome cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 56°F.

10. Day 10 — Thursday, Dec 31, 2026 — Barcelona, Spain

    Barcelona, Spain is a scheduled port of call on day 10 of the 14-night Iberia & Italian Treasures Lisbon to Rome cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 58°F.

11. Day 11 — Sunday, Jan 3, 2027 — Civitavecchia, Italy

    Civitavecchia, Italy is a scheduled port of call on day 11 of the 14-night Iberia & Italian Treasures Lisbon to Rome cruise on Oceania Sirena. Expected weather: partially cloudy with highs near 56°F.